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Change in Accumulated Other Comprehensive Loss (Detail)
$ in Thousands
9 Months Ended
Sep. 30, 2021
USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning Balance $ 1,529,150
Ending Balance 1,715,265
Foreign Currency Translation Adjustment  
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning Balance 2,085
Other comprehensive loss (12,004)
Ending Balance $ (9,919)